( Reaffirmed 2002 ) IS : 4511 ( Part 2 ) - 1986 Indian Standard METHODS STYRENE-BUTADIENE PART 2 OF TEST FOR RUBBER (SBR) LATICES OF DENSITY DETERMINATION SBRL : 6 ( First Revision Rubber Chairman SHRI LALIT MOHAN JAMNADAS ) Sectional Committee, PCDC 14 Representing Cosmos India Rubber Works Pvt Ltd, Bombay Vice-Chairman SHRI S. B. G~NQULY Dunlop India Ltd, Calcutta K. S. LOQANATFIAN (Alternate to Shri S. B. Ganguly) Padinjarekara Agencies Ltd, Kottayam SHRI SATISH ABRAHAM Transasia Carpets Lrd, Sikandrabad (UP) SERI 0. P. A~ARWAL SHRI J. N. JHA ( Altcrnatc ) Ministry of De-fence ( DGI ) SHR~ A. K. BANDOPADHAYA SE'RRI V. BHATTACHARYA ( Alternate ) Carbon & Chemicals India Ltd, Cochin DR B. B~ERJEE Escon Consultants Pvt Ltd, Calcutta DR D. BAN~RJEE Alkali & Chemical Corporation of India Ltd, DR P. S. B~IARQAVA Calcutta SHRI N. C. SAMAJDAR ( Alkwute ) Andrew Yule & Co Ltd, Calcutta SHRI J. CHATTERJEE SBRI A. K. BISWAS ( Alternab ) All India Rubber Industries Association, Bombay SHRI P. K. CHATTERJEE DR S.-N. CHARRAVARTY ( Akemate ) Synthetics & Chemicals Ltd, Bombay SHRI H. C. CH~PRA DR R. N. MEHROTRA ( Alrrrnate ) Association of Planters of Kerala, Cochin SHRI D. W. MCCRIRICK SHRI P. K. MENON (Alternate ) National Test House, Calcutta DR D. K. DAS SHBI SHR~ P. B. G. DASTIDAR SHRI S. SARKAR ( Alternate ) SHRI A. GHOSH ( Altrmo~r ) Bata India Ltd, Calcutta ( Continued on pap 2 1 INDIAN ~CQCopyright 1987 STANDARDS INSTITUTION This publication is protected under the Indian Cepyrighl Act ( XIV of 1957 ) and reproduction in whole or in part by any means except with written permission of the publisher rhall be deemed to be an infringement of copyright under the said Act. 16 : 4511 ( Part 2 ) - 1986 ( Continuedfrom page 1 ) Members SHKI S. L. GANDHI SHRI H. C. PERTI ( A/tern&c ) SHRI J. M. GARQ Rcprcsenting Ministry of Defence (R & D ) Directorate General of Technical Development, New Delhi MRF Ltd, Madras SHRI A. GEORQEJonn Plantation Corporation of Kerala Ltd, Kottayam SHRI K. J. JOSEPH SHRI K. T. VER~HESE ( Alternate ) Indian Rubber Regenerating Co Ltd, Thane SHRI G. R. KAVISHVAR SHRI P. S. VIRANI (Alternate) M. M. Rubber Co Ltd, Madras SHRI K. N. KOSHY SRRI N. SUBXAMANIAN ( Alternate ) Thirumbadi Rubber Ltd, Mokkam SHRI P. K. MADHAVA MENON SHRI M. PUSRKARAKSRAN ( Alternate ) Modi Rubber Ltd, Modipuram SHRI L. K. M.~THUR United Planters Association of Southern India, SHRI P. K. MENON Coonoor SHRI E: B. UNNI ( Alternate ) Indian Rubber Manufacturers Research DR W. MILLNS Association, Thane SHRI N. B. FEQADE ( Ahnate ) Hindustan Latex Ltd, Trivandrum SHRI R. MU~LEEDHARAN NAIR Bayer ( India ) Ltd, Bombay SHRI R. R. PANDIT SHRI D. J. BHAR~GHA ( Ahmate ) London Rubber Co ( India ) Ltd, Madras SHRI S. A. PASHA SHRI R. KRISHNAN ( Alternate ) The Arakkunnam Cooperative Rubber Marketing SHRI M. C. PAUL Society Ltd, P. 0. Arakkunnam Automotive Tyre Manufacturers Association, SHRI A. RAJAMANI New Delhi SHRI A. GEORGEJOHN ( Alternate ) Tyre Corporation of India Ltd, Calcutta DR S. K. RAY SHRI S. B. SARKAR (~ltcmutc) The Travancore Rubber & Tea Co Ltd, SHRI S. V. SARMA Trivandrum SHRI C. S. KRISHNASWAMY ( Alternate) Indian Petrochemicals Corporation Ltd, P. 0. SHRI SUNIL I. SHAH Petrochemicals SHRI A. K. MALLIK (Alternate ) State Trading Corporation of India Ltd. Bombay SERI RAJXNDER SINQH SHRI 0. P. ARORA ( Alternatc ) Rubber Research Institute of India, Kottayam; DR E. V. THOMAS and Rubber Board, Kottayam DR M. G. KUM~RAN ( Alternate I ) DR N. M. MATHEW (Alternate II ) Director General, IS1 ( Ex-o#cio Member) SHRI M. S. SAXENA, Director ( P & C ) Secrehzry SHRI DIL~EP KUMAR Assistant Director ( P & C ), IS1 ( Continusd on puge 9) 2 IS : 4511 ( Part 2 ) - 1986 Indian Standard METHODS STYRENE-BUTADIENE PART 2 OF TEST FOR RUBBER (SBR) LATTICES OF DENSITY DETERMINATION SBRL : 6 ( First Revision ) 0. FOREWORD 0.1 This Indian Standard ( Part 2 ) ( First Revision ) was adopted by the Indian Standards Institution on 28 February 1986, after the draft finalized by the Rubber Sectional Committee had been approved by the Petroleum, Coal and Related Products Division Council. 0.2 Test following methods for rubber Indian Standards: latex had been originally covered in the For .Natural Rubber Latex IS : 3708 (Part 1 )- 1966* IS : 3708 ( Part 2 )-1968t For Styrene Butadiene Rubber Latex IS : 4511 ( Part l )-1967: Since some of the test methods covered in above standards were common, the concerned committee had decided some years ago to unify and publish a separate series of methods of test which would be applicable to all types of latices-natural as well as synthetic. Accordingly, the following six test methods had been covered under IS : 9316: IS : 9316 Part Methods 1-1979 of test for rubber Determination Determination latex: tension of surface of viscosity Part 2-1979 *Methods of test for natural rubber latex: Part 1 Dry rubber content, sludge content, density, total alkalinity, KOH-number, mechanical stability, volatile fatty acid number, pH, total nitrogen, total copper, total non, total manganese and total ash. tMethods of test for natural rubber latex, Part 2. SMethods of tests for styrene-butadiene rubber ( SBR ) latices: Part 1 Determination of dry polymer, pH, density residual styrene, bound styrene and soap content. 3 IS : 4511 (Part 2 ) - 1986 Part 3-1979 Determination of coagulum content Part 4- 1979 Determination Part 5- 1979 Drawing Part 6-1982 of total solids content of samples of PH Determination 0.2.1 As a result of further rethinking on the subject, it has now been decided to redesignate the test methods common to natural and synthetic rubber latices as RL series; test methods for natural rubber latex as NRL series and test methods for styrene-butadiene rubber latex as SBRL test methods for rubber latex have been series. Consequently, rationalized into the following three series: IS : 9316 Unified methods of test applicable synthetic rubber latices - RL series; IS : 3708 Methods NRL series; and of test ~applicable applicable to both natural rubber and to natural to latex - IS : 4511 Methods of test rubber latex - SBRL series. styrene-butadiene 0.3 The existing Indian Standards under IS : 3708 (Parts 1" and 2t ), IS : 4511 (Part 1: ) and IS : 9316 ( Parts 1 to 6 ) are being gradually replaced by separate standards underthe above three series, designated by the appropriate NRL, SBRL or RL series, respectively. 0.3.1 The methods covered under NRL: 13, NRL: 14 and NRL: 15 of IS : 3708 ( Part 1 )-1966 which are also under revision, have been proposed to be covered under the RI, series in IS : 9316 ( under revision). 0.4 In order to facilitate cross-reference, it has been decided to retain the original discrete SBRL series numbers assigned to various test methods, in IS : 4511 ( Part 1 )-1967: in the revised parts of IS : 4511. 0.4.1 For proper referencing of the existing test methods and the new methods under revision, a statement showing corresponding methods is given in Appendix A. *Methods of test -for natural rubber latex: Part 1 Dry rubber content, sludge content density, total alkalinity, KOH-number, mechanical stability, volatile fatty acid number, pH, total nitrogen, total copper, total iron, total manganese and total ash. $Methods of test for natural rubber latex, Part 2. ZMetbods of tests for styrene butadiene rubber ( SBR ) latices: Part 1 Determination of dry polymer, PH, density, residual styrene, bound styrene and soap content. 4 IS : 4511 ( Part 2 ) - 1986 0.5 In reporting the result of a test or analysis made in accordance with this standard, if the final value, observed or calculated, is to be rounded off, it shall be done in accordance with IS : 2-1960". 1. SCOPE 1.1 This standard ( Part 2 ) prescribes the procedure for determination density of styrene-butadiene rubber latices by direct method. 2. OUTLINE OF THE METHOD of 2.1 This method gives density at the desired temperature and no conversions of the density need to be made to other temperatures. This method is, therefore, applicable to any type of latex and to any concentration of latex. 2.2 The density of the latex is measured known amount of latex of known volume. 3. APPARATUS 3.1 Analytical Balance capable of weighing to the nearest milligram. to at 27 f 2°C by weighing a 3.2 Thermometer the nearest 0'2°C. 3.3 Volumetric stopper. 4. PROCEDURE capable of measuring laboratory temperatures Flask - loo-ml capacity flask with ground glass 4.1 Calibration of Volumetric FlaskWeigh a clean, dry and Fill the flask with water at pretared and dry IOO-ml volumetric flask. laboratory temperature to a mark placed high up on the stem of the flask This high mark on the stem diminishes just below the glass stopper. the wall area inside the stem which is free from the adhering latex in the density determination. Weigh the flask plus water to the nearest mg. For Record this mass and also the temperature of the water in the flask. this temperature t, the volume of the flask to the mark is calculated from the following equation: *Rules for rounding off numerical values ( reviced), 5 IS : 4511 ( Part 2 ) - 1986 where V = volume in ml of the flask at laboratory temperature, t ( t being Mt = mass of the flask plus the water at temperature the temperature in "C of water in the flask ), M = mass in g of the empty flask, and dt = density 4.2 of water in g/ml at temperature t. Weigh the clean, dry, pretared and calibrated flask to the nearest Introduce latex into the flask through funnel to avoid sticking of mglatex to the joint areas, until the flask is approximately half full. Stopper the flask and weigh again to the nearest mg. Remove the stopper and add water to the calibrated mark. During the addition of this water swirl the flask at times, so as to free any bubbles which may be present in the latex. With the liquid level at the mark, stopper the flask and weigh again to the nearest mg. Mix the contents well and measure the temperature. The density measurement shall be reported at 27°C. 5. CALCULATION 5.1 Calculate the density of the latex from the following equation: where D, = density of the latex in g/ml at temperature t (t being the temperature in "C of the latex and water mixture in the volumetric flask); M, = mass in g of the flask plus the latex; M = mass in g of the empty flask; V = volume in ml of the flask the stem; to the calibrated & = density to the calibrated mark on M, = mass in g of the flask containing of the distilled water latex and water up mark on the stem; and in g/ml at temperature t. APPENDIX ( Cfause 0.4.1 ) TABLE SHOWING CORRESPONDENCE OF THE IN THE EXISTING IS : 9316 (PARTS 1 TO 5 ( PART 1 )-1966, IS : 3708 ( PART 2 )-1968, REVISION/PROPOSED REVISION OF ~_ ----__--~-~Test Method (1) RL Series Determination of surface tensiori Determination of viscosity Determination of coagulum content Determination of total solids content Drawing of samples Determination of PH Determination of total copper Determination of total iron Detwmination of total manganese NRL Series Determination content Determination Determination Determination of dry rubber IS : 3708-1966 IS : 3708-1966 IS : 3708-1966 IS : 3708-1966 Part 1 ( NRL IS : 9316-1979 IS : 9316-1979 IS : 9316-1979 IS : 9316-1979 IS : 9316-1979 IS : 9316-1982 IS : 3708-1966 IS : 3708-1966 IS : 3708-1966 Part 1 Part 2 Part 3 Part 4 Part 5 Part 6 Part 1 (NRL Part 1 ( NRL Partl(NRL:15) EXISTINO TEST METHODS h-__-_-L---_----i IS No. (2) A VARIOUS METHODS OF TEST COVERED )-1979, IS : 9316 ( PART 6)-1982, IS : 3708 IS : 4511 ( PART l )-1967 WITH THE IS : 9316, IS : 3708 AND IS : 4511 PROPOSED REVISION h------_-__-_7 IS No. Series (4) (5) Part ( Series) (3) ' r--------- Remark (6) 4 IS : 9316 Part 1 (RL IS:9316Part2(RL:2) IS : 9516 Part 3 (RL IS : 9316 Part 4 (RLI: IS:9316Part5(RL:5) : 1) 1 1 : 3) 1 4) / ) Under revision : 13 ) : 14) IS : 9316 Part 6 (RL IS : 9316 Part 7 ( RL IS : 9316 Part 8 ( RL IS:9316Part9(RL:9) : 6) 1 :7) 1 :8) 1 G; .. 1 J E CI ? : 1) i5) : 6) :7) x IQ w * : 1) IS : 3708-1985 Part I (NRL of sludge content of density of total alkalinity Part 1 (NRL:5) Partl(NRL:6) Part 1 ( NRL : 7 ) IS : 3708-1985 Part 2 ( NRL IS : 3708-1985 Part 3 (NRL IS : 3708-1985 Part 4 ( NRL I EXISTING --.-=------.._-----~-_-_-_----__---~ Test Method (1) Determination Determination stability Determination acid number Determination Determination Determination Determination of KOH-number of mechanical of volatile of of of of fattv TEST METHODS IS No. Part ( Series ) (3) Part Part Part 1 (NRL 1 ( NRL 1 ( NRL +-----_---A_----IS No. (4) PROPOSED REVISION Series (5) Part 5 ( NRL : 8 ) Part 6 (NRL : 9) ---Remark (6) (2) IS : 3708-1966 IS : 3708-1966 IS : 3708-1966 IS : 3708-1966 IS : 3708-1966 IS : 3708-1968 1's : 3708-1968 :8 ) : 9 ) : 10) : 12) : 16 ) 17) : 18) IS : 3708-1985 IS : 3708-1985 IS : 3708 Part 7 (NRL : IO) : 12 ) : 16) : 17) 18) total nitrogen total ash boric acid magnesium Part 1 (NRL Part 1 ( NRL PartZ(NRL: Part 2 (NRS IS : 3708 Part 8 ( NRL IS : 3708 Part 9 ( NRL IS : 3708 Part 10 (NRL IS : 3708 Part 11 (NRL: SBRL Series 03 Determination Determination Determination styrenc saturates ) Determination Determination of dry polymer of density of residual ( volatile unof bound styrene of soap content IS : 4511-1967 IS : 4511-1967 IS : 4511-1967 Part 1 (SBRL Part 1 (SBRL:6) Part1 (SBRL:8) : 1) IS : 4511 Part 1 ( SBRL IS: 4511 Part 2 (SBRL: IS : 4511 Part 3 ( SBRL : 1) 6) : 8) Under revision IS : 451 l-1967 IS : 4511-1967 Prrt Part 1 ( SBRL 1 ( SBRL :9 ) : IO) IS IS : 4511 Part 4 ( SBRL : 9 ) : 451 I Part 5 ( SBRL : 10 ) Under revision IS L4511( Part 2 ) - 1986 ( Continuedfrom page 2 ) Methods of Testing Subcommittee Convener DR S. N. CHAEBAVARTY Members Modi RubberLtd, PCDC 14 : 1 Representing Modipursm Saar S. K. MUSTAFI ( Altrmafr to Dr S. N. Chakravarty ) Padinjarekara Agencies Ltd, Kottayam SHRI SA~SH ABRAHAM L. G. Balakrirhnan & Bros Ltd, Coimbatore SHEI P. S. BALASUBRAMAIUAM SEIRI S. KUXAR ( Alrrmutr ) Union Commercial & Industrial Co Pvt Ltd, SHRI A. N. BEATTACEARYA Calcutta SHRI B. PANJA (Alternate) Andrew Yule & Co Ltd, Calcutta SHRIJ. CHATTERJEE SHRI A. K BISWAS ( Altrrnats) BAYER ( India) Ltd, Bombay SHRI P. K. CEATTERJIE SERI D. J. BHARUCHA (Alternate) Synthetics & Chemicals Ltd, Bombay 5-1 H. C. CEOPRA DR R. N. MEHROTRA ( Alttrnatc) Directorate General of Technical Development, Sn~x J. M. GARQ New Delhi Ministry of Defence ( DGI ) SHRI K. R. GARB &RI P. L. NAO ( Altsrnatc ) Polyolefins Industries Ltd, Bombay SHRI C. S. INAMDAE Sa~r V. K. SUD ( Altarnat ) MRF Ltd, Madras SHRI A. GEORQEJOHN Indian Rubber Regenerating Co Ltd, Bombay Sam G. R. KAVISHVAR SHRI P. S. VIRANI (Alternate ) The Cosmos India Rubber Works Pvt Ltd. SRRI P, L. KINARIWALA Bombav SHRI S. N. GHADQE (Alternate) Dunlop India Ltd, Calcutta SHRI K. S. L~OANAT~AN DR S. CHATTOPADIXYAY ( Alternate ) The Thirumbadi Rubber Co Ltd, Mokkam SHRI P. K. MADHAVA MEN~N Corporation Petrochemicals Ltd, Indian SHRI A. K. MALLIK P. 0. Petrochemicals Da Y. N. SIURMA (Alternate) Manufacturer's Research Rubber Indian DR W. MILLNS Association, Thane Tyre Corporation of India Ltd, Calcutta SHRI ASOK MITRA DR S. K. RAY ( Alternate) National Test House, Calcutta SHRI P. K. PAIN Travancore Rubber & Tea Co Ltd, Trivandrum SHRI S. V. SARMA SERI C. S. KBISENASWAEY ( Alternate ) The Rubber Board, Kottayam DR E. V. THOMAS DR N. M. MATEEW ( Alternate) 9 INTERNATIONAL Base Units QUANTITY SYSTEM OF UNITS ( SI UNITS ) UNIT SYMBOL m kg Length Mass Time Electric current Thermodynamic temperature Luminous intensity Amount of substance S8applemcntary Unita QUANTITY metrc kilogram second ampere kelvin candela mole A K cd mol UNIT SYMBOL Plane angle Solid angle Derived Units QUANTITY radian steradian UNIT newton joule watt weber terla hertz siemenr volt Pascal rad *r DE~INITXON 1N J" SYMBOL Force ~erw Power FluX Flux density Frequency Electric conductance Electramotivc force Pressure, stress 1J - - 1 kg.m/ss 1 N.m 1V.s I Wb/ms 1 c/s (a-s) 1 A/V 1 W/A 1 N/m' W Wb T HZ S V Pa 1W 1 Wb-= 1T 1 Hz = 1s 1v = 1 Pa = lJ/s